


Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
669 FZUS53 KLOT 182039 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 239 PM CST Tue Feb 18 2025 For waters within five nautical miles of shore on Lake Michigan Waves are provided as a range of significant wave heights, which is the average of the highest 1/3 of the waves, along with the average height of the highest 10 percent of the waves which will occasionally be encountered. LMZ740>742-190415- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 239 PM CST Tue Feb 18 2025 .TONIGHT...Northwest winds 10 to 20 kt. Mostly cloudy. Waves 1 to 2 ft. .WEDNESDAY...Northwest winds 10 to 20 kt. Intermittent flurries in the afternoon. Waves 1 to 2 ft. .WEDNESDAY NIGHT...Northwest winds 10 to 20 kt. Intermittent flurries. Waves 1 to 2 ft. .THURSDAY...Northwest winds 15 to 20 kt. Partly cloudy. Waves 2 to 4 ft. Wave heights are for ice free areas. $$ LMZ743>745-190415- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 239 PM CST Tue Feb 18 2025 .TONIGHT...Northwest winds 10 to 20 kt. Isolated snow showers. Waves 2 to 4 ft. .WEDNESDAY...Northwest winds 10 to 20 kt. Slight chance of snow showers in the morning, then intermittent flurries in the afternoon. Waves 2 to 4 ft. .WEDNESDAY NIGHT...Northwest winds 15 to 25 kt. Intermittent flurries. Waves 2 to 4 ft. .THURSDAY...Northwest winds 15 to 25 kt. Slight chance of snow. Waves 3 to 5 ft. Wave heights are for ice free areas. $$